diff --git a/.gitignore b/.gitignore
index 323e656..de05bd5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,5 +2,5 @@
 result
 result-*
 
-# Clangd cache
-.cache/clangd
+# Ccls cache
+.ccls-cache/
diff --git a/.helix/languages.toml b/.helix/languages.toml
new file mode 100644
index 0000000..cf31b68
--- /dev/null
+++ b/.helix/languages.toml
@@ -0,0 +1,6 @@
+[[language]]
+name = "c"
+language-servers = [ "ccls" ]
+
+[language-server.ccls]
+command = "ccls"
diff --git a/flake.nix b/flake.nix
index 8a7617f..aa60bad 100644
--- a/flake.nix
+++ b/flake.nix
@@ -16,7 +16,7 @@
         name = "3ds-devshell";
         packages = with nixpkgs.legacyPackages.${system}; [
           gnumake
-          clang-tools
+          ccls
           (
             writeShellScriptBin "generateClangCompileCommands" ''
               make clean